Audi TT (2007 year). Manual — part 55
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
– Remove bolts -arrows- and pull charge pressure sender -
G31- / intake air temperature sender -G42- out of air pipe.
Installing
• Tightening torque
Installation is carried out in the reverse order; note the following:
Note
Fit new O-ring.
2.3
Removing and installing charge air cool‐
er
Removing
– Remove radiator
.
– Remove charge air hose (left-side) -1- from charge air cooler.
– Release air ducts (left and right) and push to one side in order
to remove bolts -arrows-.
– Push top edge of charge air cooler slightly towards rear.
– Lift charge air cooler out of bottom mounting points.
– Push charge air cooler towards engine.
– Support charge air cooler from below to prevent charge air
cooler from dropping.
2. Charge air cooling
211
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
WARNING
Risk of injury caused by refrigerant.
♦ The air conditioner refrigerant circuit must not be opened.
Caution
Make sure that condenser and refrigerant pipes and hoses are
not damaged.
♦ Do NOT stretch, kink or bend refrigerant lines and hoses.
– Remove bolts -arrows- and -1-.
– Detach condenser from charge air cooler and take charge air
cooler out from below.
Installing
• Tightening torques
Installation is carried out in the reverse order; note the following:
Note
♦
Hose connections and air pipes and hoses must be free of oil
and grease before assembly.
♦
Secure all hose connections with the correct type of hose clips
(same as original equipment) ⇒ Electronic parts catalogue .
♦
To ensure that the air hoses can be properly secured at their
connections, spray rust remover onto the worm thread of used
hose clips before installing.
.
2.4
Checking charge air system for leaks
Special tools and workshop equipment required
♦ Charge air system tester -V.A.G 1687- with adapter -V.A.G
1687/12-
212
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
Procedure
– Release fasteners -1 ... 4- and remove centre noise insulation.
– Release hose clip -2-, lift retaining clip -1- and remove air hose.
– Insert adapter -1687/12- into air hose -1- and secure with hose
clip.
Prepare charge air system tester -V.A.G 1687- as follows:
– Unscrew pressure control valve -2- completely and close
valves -3- and -4-.
• Make sure knob is pulled out before turning pressure control
valve -2-.
2. Charge air cooling
213
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
with respect to the correctness of information in this document. Copyright by AUDI AG.
– Connect charge air system tester -V.A.G 1687- as shown on
illustration.
214
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